Refrigerator.



P. V. DETWILBR.

BEFBIGERATOR.

unicum! Hmm JUxn21,1sos.

Patented June 9, 1914.

3 SHEETS-SHEET 1.

F. V. DETWILER.

REPRIGERATOR.

AP1 LIOATION FILED JUNE 21,

SHEET 2.

Patented Jun 9,

3 SHEETS- coLUMBlA PLANOGRAPH co..wAsHlNa-r0N. D.

F. V. DETWILER.

REFRIGERATOR.

APPLIOATION FILED JUNE21,1909.

1,099,284. Patented June 9,1914.

3 SHEETS-SHEET 3.

UNITED STATES FOREST V. DETWILER, OF CHICAGO, ILLINOIS.

REFRIGERATOR.

Specification of Letters Patent.

Patented June 9, 19141.

Application filed June 21, 1909. Serial No. 503,372.

17 0 all 107mm it may contara Be it known that I, Fonnsr V. DETwlLER, acitizen of the United States, residing at Chicago, in the county of Cookand State of Illinois, have invented certain new and useful Improvementsin Refrigerators, of which the following is a specification.

This invention relates to improvements in refrigerators and has for oneof its objects to provide improved means whereby either the city supplyof water or ice may be used as a cooling medium. n

A further object is to provide an improved cooling casing within whichis arranged the food or provision receptacle and which cooling casingmay be readily and bodily removed from the outer casing.

A further object is to provide an improved air circulation apparatus.

A further object is to provide an improved up-going air circulation tubeand improved means for rem vably supporting and securing the tube inposition.

further object is to provide an improved construction of foodcompartment or receptacle and improved means for supporting thereceptacle and spacing the same from the walls of the cooling casing.

A further object is to provide an improved water cooling casing havingdoww going air circulation tubes within the walls thereof and improvedmeans for protecting the inlet ends of thedown-going air circulationtubes.

further object is to provide improved means whereby the rip-going airwill be discharged from the food compartment and through the bottom ofthe ice and water tank.

A tui-ther object is to provide improved means for controlling theheight of the water in the cooling casing, and improved means fordischarging the water from the casing at will.

To the attainment of these ends and the accomplishment of other new anduseful objects, as will appear, the invention consists Vin the featuresof novelty in the construction, combination and arrangement of theseveral parts hereinafter more fully described and claimed and shown inthe accompanying drawings illustrating an embodiment of the invention,and in which- Figure 1 is a longitudinal sectional view of an improvedrefrigerator of this character constructed in accordance with theprinciples of this invention and taken on line i rectangular in crosssection.

1 1 of Fig. e. Fig. 2 is a sectional view taken on line 2 2 of Fig. Fig.3 is a sectional view taken on line 3 3 of Fig. 2. Fig. et is asectional view taken on line 1li-f1v of Fig. 3. Fig. 5 is a detailperspective view, partly in section and partly broken away, of the watercooler or casing. 'Fig 6 is an enlarged detail sectional view on line 66 of Fig. 2. Fig. 7 is a detail sectional view on line 7 7 of Fig. G.Fig. 8 is a perspective view of the 11p-going air circulation tube. Fig.9 is a detail perspective view of the supporting rack for the coolingcasing and the food compartment. Fig. 10 is a perspective view of thefood receptacle.

Pteferring more particularly to the drawings and in the presentexemplification of lthe invention, the numeral 15 designates the outsidecasing of the refrigerator which may be of any desired size andconfiguration but in the present exemplitication of the invention thecasing is shown as being The casing is provided with an open front and aremovable closure 16 is provided for closing the open side and thisclosure 16 provided with one or more door openings which are adapted tobe closed by suitable doors or closures 17 so that when it is desired tohave access to the ice compartment or food receptacle, the respectivedoor or closure 1l' may be opened and when it is desired to remove thefood chamber and the cooling casing from the outer casing 15, theclosure 16 may be opened to permit such removal. Suitable fasteningdevices 18 may be provided for the closure 16 and the ordinary fasteningdevices 19 may be provided for the closures 17.

Arranged within the outer casing is a cooling casing having hollow wallsand this cooling' casing preferably comprises an open tank having abottom 2O and peripheral walls 21. The tank thus formed may be of anydesired size and configuration but is preferably of a size tosubstantially till the outer casing and to conform to the contourthereof and the peripheral walls or flanges 21 may be of any desiredheight according to the width of pan or tank desired. The tankpreferably forms the top of the cooling casing and is provided withapertures or openings 22 extending through the bottom thereof adjacentopposite wails of the tank and these l openings extend for substantiallythe entire length of the bottom in close proximity to and parallel withthe adjacent wall. or flange 21. Hollow walls comprising' spaced members23 and a bottom Q4 are provided and these walls are of a widthsubstantially equal to the width of the apertures or openings and ofsubstantially the same length as the apertures. The tops of the hollowwalls thus formed are open and the extremities of the sides at the to)are deflected laterally as at Q5 to form overhang'ing flanges or lips,so that when the body portions of the walls are inserted through theapertures or openings in the bottom of the tank, the overhanging lips orflanges o will engage the bottom adjacent the apertures or openings forsupporting the walls in position. If desired, any suitable fasten ingmeans, such as solder or the like. may be provided for securing thewalls and the tank together to prevent displacement of one with respectto the other and to form fluid tight joints. The bottom Q0 of the tankis also provided with an aperture or opening 2.6 preferably adjacent theback thereof and is located between the apertures or openings Q2, andsupported by and secured to the bottom 2() is a tubular member Q7 whichcommunicates with the aperture or opening' 26, as shown more clearly inFigs. 3 and 5. This tubular member 27 is of any desired height and isprovided for a purpose to be hereinafter set forth.

Arranged within the hollow walls of the cooling casing are downgoing aircirculation tubes 28, any number of which may be provided and thesetubes 28 are preferably of an external. diameter somewhat less than theinternal width of the hollow walls so that when the tubes 2S are placedin position a cooling fluid or water space will be formed in the wallsof the casing around the tubes 28. These tubes are supported and securedin position in any desired or suitable manner and rest upon the bottom24: of the respective walls so as to communicate with apertures 29 inthe bottom. The upper ends B0 of these tubes project for any desireddistance above the bottom Q0 of the tank and preferably extend a shortdistance above the top edge of the surrounding walls or Bauges of thetank.

The upper extremities of the walls or flanges 21 adjacent the hollowwalls of the easing are bent upon themselves as at 31 (see Fig'. 5) andthe extremities of these bent portions are again bentbackwardly as at 3Qto form upwardly opening supports. Secured to the bottom 20 of the tankand adjacent each of the flanges 95 of the wall members and extendingsubstantially the entire length of the tank adjacent the edges of theseflanges are clips or members which are provided with an offset portion34;

projecting away from the flange and these offset portions 3ft are spacedfrom the bottom of the tank.

ln order to protect the upper extremities of the downg'oing aircirculation tubes, suitable caps or shields are provided and comprise abody portion having one edge tt bent downwardly to form a flange adaptedto engage in the upwardly opening support or clip 32. A portion of thebody of the shields or caps 35 is bent as at 37 at suhstantially rightangles to the remaining por-l tion thereof and the edge of the portion2li' is deflected laterally at 3. The extremity of this laterallydeflected portion 3S is bent back upon the said portion as at 3f) toform a rear\vardly opening clip which is adapted to eiigage over theoffset portion 3lof the respective members 35i so that when the caps orshields are in position they will not only protect the upper extremitiesof the dowirgoing ail' circulation tubes but will also serve as a meansfor bracing and securing the walls of the 'atei' casing in position. Thecaps or shields are provided with a plurality of apertin'es or openingsthrough which the extremities 30 of the air tubes 2S project and ifdesired suitable protecting caps 40, which may be constructed of anydesired or suitable rct-iculatml material, are provided which extendover the ends of the tubes QS to prevent the entrance therein of anyforeign mattei'.

The portion 37 of the shields or caps may be provided with apertures oropenings 4l. adapted to be covered by reticulated mate ri al, such aswire gauze or the like, and these openings serve as passages throughwhich the water in the tank may discharge into the hollow walls of thewater casing. Arranged also within each of the hollow walls of thecooling casin g is a tubular member 4.2i (see Fig. G) one extremity ofwhich is se cured to the bottom Q11- of the hollow walls to communicatewith an aperture or opening 44 in the bottom and this tubular member 425is provided with one or more apertures or openings 45 adjacent thebottom 24 ot' the hollow walls, which serve as outlets for the water inthe walls to be discharged through the opening ell in the bottom of thewalls. Any suitable means may be provided for controlling these openings44C. A suitable and efficient means comprises a rotary valve t@ which isprovided with apertures or openings 47 adapted to be brought into register with the openings 45 in the member 4? or to be moved out ofregister. Any suitable means may be provided for controlling this valve4G. A suitable and ellicient means for accolnjjilishing this endcomprises a valve stem 4S which preferz'ibly extends upwardly and beyondthe top of the tubular member 43 and'into the tank or pan sup* ported bythe walls, and an operating handle 49 is secured to the extremity of thestem 48 preferably beyond the cap or shield 35. A suitable guide orbracket 50 may be provided, if desired, for supporting and guiding' thestem 48. This tubular member 43 also serves as an overflow pipe throughwhich the water discharges from the tank. The valve 46 for controllingthe openings 45 is hollow, as shown more clearly in F ig. '7, so as notto obstruct the flow of the water which enters the tubular memberdirectly from the tank and in order to control and regulate the heightof the water iii the tank so as to cause the water to accumulate in thehollow walls, any suitable means may be provided. A suitable andefficient means for accomplishing this end comprises a tubular section5l and has communication with the tubular member. By adjusting thesection 5l with respect to the member 43 it will be apparent that thewater will accumulate in the tank to a height until it loverflows theedge of the adjustable section 5l, so that the water will enter thetubular member 43 to be discharged through thel opening 44. The coolingcasing thus formed is adapted to be removably held within the outercasing l5. Arranged within the casingl l5 and secured to the bottomthereof is a drip pan 52 and leading from the drip pan is a dischargepipe 54.

In order to support the cooling casing above the bottom of the drip pan52, a suitable supporting fraine is provided, which may be of anydesired or suitable construction but is preferably constructed of metaland comprises spaced side frames 55 which are connected together in anydesired or suitable manner, preferably by means of a 'cross bar ormember 56 at the rear and a cross bar or member 56 at the front. Theseframes 55 are provided with open tops 57 and open sides 58 and a shieldor partition 59 is supported by each of the port thus formedL is placedwithin the casing l5 so as to rest upon the bottom of the drip pan 52and the cooling casing is then placed in position so that one of thehollow walls thereof will rest upon each of the frames so that theopenings 29 in the bottoms Q4 of the walls will stand above the openings57 in the supporting frames 55 so that the down-going air currentspassing through the tubes 28 will pass through the openings 57 in theframes and be deflected by the partitions 59 through the sides 58.

The cooling casing is of a height to terminate some distance short ofthe top of the outer casing l5 to form a cooling fluid supply chamber.Supported by the partitions 59 of the frames 55 are tubular members 6lwhich are secured in position in any desired or suitable manner andthese tubular members register with openings 62 in the partition 59. Oneof these tubular members 6l is provided for each of the overflow pipesor tubes 43 and stands in close proximity to the discharge end thereofto cause the tubes to register' and communicate with the tubular members6l so that when water is discharged through the openings 44, it willenter the tubular members 61 and be discharged into the drip pan,thereby obviating the danger of the water striking and splashing againstthe partitions 59.

Arranged within the tank supported by the hollow walls of the coolingcasing a support 63 which is preferably constructed of perforated metal.The edges 64 of this support are deflected downwardly, as shown moreclearly in Fig. 5, and the extremity thereof is deflected laterally asat 65 to forni a supporting foot, which latter is adapted to engage andrest upon the laterally deflected portion 38 of the caps or shields 35,whereby the support will be held in position and spaced from the bottomQ0 of the tank. This support 63 is of any desired size and configurationbut is preferably of a size and configuration to fit and substantiallytill the space between the portions 37 of the caps or shields 35 and thefront wall of the tubular member 37 and the front of the outer casing.An ice rack 66 is provided which rests upon the support 63 and uponwhich the ice rests.

Arranged within the ice compartment 67 is a partition 68 which is spacedfrom the rear wall of the casing l5. The ends 6) of the partition 68 arebent rearwardly, as shown more clearly in F ig. 2, and the extremities70 of the ends 69 are deflected laterally so as to engage the inner faceof the rear wall of the outer casing to space the partition 68therefrom, and suitable fastening devices 7l may be provided forremovably securing tlie partition in position, The partition is of aheight to terminate short of the top of the casing to permit its readyinsertion and removal vand may be provided with suitable apertures oropenings 72 adjacent the top edge thereof, which may be protected byreticulated material 73. such as wire gauze or the like, and throughwhich the up-going air currents may be discharged into the ice chamber67.

The food receptacle is preferably sectional in construction and isconstructed of any desired or suitable material, such as porcelain orthe like, and eoinprises a bottom section 7 it. This section is providedwith a rear upwardly projecting wall and side walls 7 (3, and thecorners formed between the bottoni 7l and the walls 75, 7G, are roundedas shown at 77, to permit the bottom to be readily cleaned and toobviate the danger of the iceumulation ot' dirt or sediment in thecorners between the bottom and walls. @upported by the bottom section isa back wall 78 having forwardly projecting extremities 7 Sl, whichlatter Ytorni portions of the side walls. The back Awall 7S is adaptedto rest upon the edge of the upwardly extendingl portion 75 of thebottom section, and the forwardly extended portions 79 are adapted toengage and rest upon portions of the edges ot the upwardly extendingsides 76 ot the bottom section. The side walls S0 ot the tood receptacleare adapted to rest upon the ren'iaining portions of the edges ot' theedges abutting the front edges ot' the tori'iardly extending portions 79ot' the back 7S. The upper section oit the t'ood receptacle comprises atop 81 having a down-- wardly projecting portion 82 at its rear edgeadapted to engage and rest upon the top' edge of the back section 78.The top also provided with downwardly projecting portions 83 at thesides thereot which are adapted to engage and rest upon the upper edgesot the side sections and also upon the upper edges ot the forwardlyprojecting portions 7 9 oit the rear will. The corners :t'ormed betweenthe various walls are all rounded as at 77 and any suitable tasteningmeans, such as cement or the like, may be provided ttor securing thesections against displacement. lt' desired, additional tasteningl means,such as dowel pins S4 (r the like, may be provided which extend intoadjacent edges ot' the sections.

The top Si o't the toed receptacle pio vided with a slot or eloi'igatedaperture S5, which is arranged to communicate with the opening iai inthe bottom 2O ot' the tank and extends substantially across the top ofthe 'toed coinjinirtineiit. An up-going air circulation tube or liue 8ois proviifled which is ol a coniguration to contorni to the aperture oropening S5 and to extend through the opening. The lower edges oit thetubular member 86 are cut and bent to torni spaced series oic laterallyprojectingI ears or flanges S7, SSR extending beyond the sides thereofand laterally projecting ears or extensions Si) extend' beyond the endsof the tubular incinbei'. This tubular member So is preferably angularin cross section and extends through the top of the cooling casing andis ot an external size somewhat less than the internal size of thetubular member Q7 through which latter it projects.

flanges or ears 88, 8S) rest upon the upper 'Y tace o't the top Sl. Whenin this position the flanges S7 may be then deflected from the inside oithe tood receptacle and against the lower tace ot the lop 8l so as tosecurely hohl the 'liuc or tube Sti against acci dental displacement.The tine or tube 8G being otl a size somewhat less than the internalsize ot the tubular member Q7 will form a dead air space 00 between thetwo tubular members, thereby preventing the warm up-going air currentsfrom coming i directly in contact with a chilled surface to portions 76ot the bottom with. their rear i obviate the danger oit thc formation otwater ot condensation which would drip back into the food compartment.l`he space thus formed is closed as at ill at the top of the tubularmember Q7 by means ot a fiange sup ported by and secured to the tube 86.

In order to brace the members 23 of the hollow falls to preventcollapsing or damage caused by the pressure or weight of the water,braces 92 may be provided which are arranged within the walls andpreferably extend beyond the walls. Suitable fastening devices 93, suchas nuts or the like, arc provided for securing the supports in positionadjacent the outer walls of the casing. The inner extremities of thebraces 92 are formed into clips 9 4, and members 95. such as wood stripsor the like, are provided and supported by these clips anditliesemembers 95 are provided with air circulation openings 9o therethrough.Any suitable number ot these. members may be. provided throughout theheight of the walls oi the casing and the members serve as means torholding the sections ot' the food receptacle `in position and 'torspacing the walls ot the tood receptacle from the walls of the coolingcasing.

ln use and when the ice is placed within the ice conipartment` o7 thedrip water will Vtlow trom the tank into the hollow y'alls and alsoaround the tubular member 27. Then the walls and tank have been iilledwith water to a predetermined level, which level may be regulated by theadjustable sections 5l ot' thejoveri'iow pipes -l--l, any further supply ot water will How ont of the pipes or tubes 43 to be discharged intothe drip pan At the same time the warm air currents in the 'foodreceptacle will rise and will be discharged through the bottom 2O ofthe. tank into the space between the partition (18 and the rear wall otthe casing within which space the upgoing air circulation tube or flueS6 is located. From this space the air will be discharged into the icecompartment G7 through the openings '.72 and some of the air currentswill pass over the top of the compartment, which latter terminates shortof the top of the outer casing. Vhen the temperature of the air thusdischarged into the icecompartment is lowered7 the air currents willenter the down-going air circulation tubes 2S to be discharged throughthe bottom of the hollow walls and against the partition 59. Thepartition will deflect the air currents through apertures or openings 97in the walls of the food receptacle and the currents will rise in thecompartment to again enter the tube 68. The side walls of the foodreceptacle may also be provided with additional apertures or openings 98through which the cold air from the adjacent walls of the cooling casingwill be discharged into the food compartment.

Any number of shelves 99 may be provided to form the food supports andthese shelves are provided with apertures or openings 100 through whichthe air currents circulate. Any suitable means may be provided forremovably supporting the shelves in position and for this purposebrackets 101 may be provided and these brackets may be secured inposition and against the inner face of the walls of the food receptacleby means of suitable fastening devices 102 such as screws, nails, boltsor the like, which pass through the brackets, the walls of the foodreceptacle and into the members 95. Although the specific means offastening and supporting the shelves is shown and described, it is to beunderstood that the shelves may be supported in any other manner, so asto permit the food receptacle to be removed from the water cooler orcasing without having to first remove the support-- ing brackets forthe' shelves from the walls of the receptacle.

hen the food receptacle is placed within the cooling casing it will beheld in position and supported by means of the supporting frame and thebottom of the receptacle will engage and rest upon the projecting ledgesor supports 00 upon the frames 55 and will also rest upon the cross orconnecting bars ,E0 between the frames.

lVhen it is desired to use the city supply of water as a cooling mediuminstead of the ice, a pipe 103 is provided and which pipe is itselfprovided with any number of discharge nozzles 104. The pipe 103 islocated in any desired or suit-able position within the tank and ispreferably supported adjacent the rear thereof and to extend across thetop. A supply pipe connection 105 is connected to the pipe 103 andextends through one of the walls of the outer casing, preferably therear wall. el controlling valve 10G is also provided in the connection105.

TvVhen the water supply is used as the cooling medium, the pipe 105 isconnected to a suitable source of supply and the valve 106 opened sothat the water will flow into the pipe 103 and be discharged through thenozzles 104i into the tank and from there will flow into the hollowwalls of the cooling casing, in the same manner as the drip water. Thispipe 103 is supported in any desired manner` and may be provided andinserted when the refrigerator is constructed.

lVhile in the present exemplication of the invention the supply pipe isshown as extending through the rear wall of the outer casing. it is tobe understood that the pipe i,

may be arranged in any manner and may extend through any o-f the Wallsof the casing. lith this improved construction it will be apparent thatall of the parts may be readily removed from the casing and b providingthis improved form of food receptacle it will also be apparent that theformation of square corners between the walls is obviated, therebyrendering it possible to readily wash or clean the food re'- ceptacle.

ln order to prevent accidental displacement of the cooling casing withinthe outer casing 15 during shipment or transportation7 suitablefastening devices may be provided which preferably comprise blocks 15aconstructed of any desired or suitable material and these blocks may beremovably secured to the inner walls of the outer casing in any desiredor suitable manner, preferably by means of fastening devices 15b such asscrews or the like. Any number of these blocks may be provided and arearranged so as to engage and rest upon the upper edges of the walls ofthe tank. Then it is desired to remove the cooling casing from the outercasing` the cooling casing may be slid through the front of the outercasing without removing the blocks 15a or the blocks may be firstremoved before the oasing is removed.

In order that the invention might be fully understood, the details ofthe foregoing embodiment thereof have been thus specifically describedbut What is claimed as new is 1. In a refrigerator the combination of aninclosing casing, a cooling casing provided with hollow walls and havinga source of supply of cooling fluid, down-going air circulation tubeswithin the walls of the cooling casing, and an up-going air circulationtube independent of the side walls of the cooling casing and extendingfrom the inside of the cooling casing through the top wall thereof.

2. ln a refrigerator, the combination of an inclosing casing, a coolingcasing having hollow walls and having a source of supply of QQQlingHuid, a down-going air circulation tube within the walls, one end of thetube extending above the cooling casing, the other end of the tubedischarging below the cooling casing, and an rip-going air circulationtube independent of the walls of the cooling casing and leadine from theinside of the cooling casing and` dischargingl directly through the topthereof.

3. ln a refrigerator, the combination of an inclosing casing a removablecooling casing having a, top and hollow side falls and having a sourceof supply of cooling fluid, a down-going air circulation tube withineach of the walls, and an rip-going air circulation passage independentof the f'alls and leading directly t-hrough the top of the coolingcasing from the interior thereof and between the hollow walls oitl thecasing, said passage discharging above the top of the cooling casing.

-'l-. In a refrigerator, the combination of an inclosing casing, aremovable cooling casing therein, said cooling casing having a top andhollow side walls, and having a source of supply of cooling fluid,down-going air circulation tubes within the walls, an rip-going aircirculation tube separate from the cooling casing walls leading from theinterior directly through the top of the cooling casing and projectingbeyond the top, and incans forming an inclosed air space around thelip-going air circulation tube.

ln a refrigerator, lthe combination of an iuclosing casing, a removablecooling casing therein, said cooling casing having a top and hollow sidewalls and having a source of supply of cooling fluid, dowirgoing aircirculation tubes within the walls` an upgoing air circulation tubeseparate from the cooling casing walls extending directly through thetop of the cooling casing and projecting bevond the top, and a tubularmember surrounding and spaced from the rip-going air circulatirn'i tubeto form an inclosed air space around said air tube.

G. Vln a rcfrigrator, the comliiinatiou of an inclosing casinff, aremovable cooling casing therein, said coolingl casing being providedwith a top and hollow side ialls and having a source of supplyv ofcooling fluid. down-going air circulation tubes within the walls, thetop of the casing being pro-vided with au aperture or openingtherethrough, a tubular member supported by the top and surrounding theopening, and an rip-going air circulation tube separate from the casingwalls extending through the said tubular member and the opening, said`air tube being of a size smaller than the size of the said tubularmember to form an air space therebetween.

7. In a refrigerator, the combination of an inclosing casing, aremovable cooling casing therein, said cooling casing being providedwith a top and hollow side walls, and har ing a source of supply ofcooling tluid` down-going air circulation tubes within the walls, thetop of the cooling casing being provided with an aperture or (meningtherethrough, a tubular member separate from the cooling casing wallssupported by the top and surrouinling the opening and an upgoing aircirculation tribe also separate :from the cooling casing walls extendingthrough the said tubular men'iber and the opening. said air tube beingof a size smaller than the size of the said tubular member to t'orm anair space therebetween and extending for some distance bevond the inletends ol' the downgoing air circulation tubes.

8. ln a refrigerator, the combiinrtion of an inclosing casing, a coolingcasing having an open front and back and provided with a top and hollowside walls, said casing ha i" ing a source of supply of cooling fluid,down-going air circulation passages within the walls, and an 11p-goingair circulation passage independent o't the walls and dischargingdirectly through the top ol' the cooling casing from the interiorthereof and between the hollow side walls and above the top of thecooling casing.

In a refrigerator, the combination of an inclosing casino', a coolingcasing haw ing an open front and back and provided with a top and hollowside walls. said casn ing having a source of supply of cooling fluid,down-going air circulation passages within the 'alls, said top beingin'ovidcd with an opening therethrough extending substantially acrossthe casing between the side walls, and a removable 11p-goingaircirculation tube separate from the casing walls extending throughsaid opening.

l0. ln a refrigerator, the conlbination of anA inclosing casing, acooling casing having an open front and back and provided with a top andhollow side alls, said casing having a source of supplyv of coolingfluid. dowlrgoing air circulation passages Vwithin the walls, said topbeing provided with an opening therethrough extending substantiallyacross the casing between the side walls, ay tubular member supported bv the top and surrounding the opening, and a removable up-going aircirculation tube exv tending through the opening and tubular member andbeing spaced from the latter.

1l. ln a refrigerator', the coinbiiaition of an inclosing casing and aremo *able cooling casing therein, said cooling casing having hollowwalls, a tank supported by and having communication with the walls, saidtank having a source of supply of cooling fluid, down-going aircirculation tubes within the walls, and an up-going air circulationpassage leading from the inside of the cooling casing and dischargingdirectly through the bottom of the tank at a point spaced from the wallsof the inclosing casing and above the top of the cooling casino'.

l2. in a refrigerator, the combination oi an inclosiug casing and aremovable cooling casing therein, said cooling casing having hollow sidewalls, a tank supported by and having communication with the walls, saidtank having a source of supply of cooling Huid, down-going' aircirculation tubes within the walls, an up-going air circulation passageleading from the inside of the cooling casing and discharging directlythrough the bottom ot the tank, and means separate ltroni the casingwalls forming an inclosed dead air space around the said up-going aircirculationpassage.

1,3. In a refrigerator, the combination of an inclosing casing and aremovable cooling casing therein, said cooling casing having hollowwalls, a tank supported by the walls and having communication with thespace in the walls, said tank having a source ot supply of coolingiiuid, down-going air circulation tubes within the walls, and aremovable 11p-going air circulation tube pass- .ing directly through thebottom of the tank and extending beyond the bottom oi the tank.

le. In a refrigerator, thc combination ot an inclosing casing and a.removable cooling casing therein, said cooling casing having hollowwalls, a tank supported by the walls and having communication with thespace in the walls, said tank having a` source of supply of coolingfluid, down-going air circulation tubes within the walls, the bottom ofthe tank being provided with an opening therethrough, a wall surroundingthe opening separate trom the casing walls, ant. an upgoing aircirculation tube extending through the opening and spaced trom theysurroiuuling wall.

l5. ln a refrigerator, the cou'ibination ot au. inelosiug casing,removable cooling casing therein, said cooling casing comprisingrhollowside walls, a tank supported by the walls and having communication withthe space in the walls, said tank forming the top ot the cooling casingand having a source ot supplyv ot` cooling Huid, down-go ing aircirculation tubes within the walls of the cooling casing, an up-goingair circle lation passage separate from the walls ot the casingdischarging directly through thc tank and above the bottom thereof, toform a straight passage tor the air therethrough, and an overilow forthe cooling casing.

ln a refrigerator, the combination of an inclosing casing. av removablecooling' casingtherein.` said cooling casing comprising hollow sidewalls, independent ot each other, a tank supported by the walls andhaving communication with the space in the walls, said tank forming thetop of the cooling casing and having asource of supply of cooling fluid,down-going air circulation tubes within the walls o't the coolingcasing, an up-going air circulation passage discharging directly throughthc tank, an independent overflow for each of the hollow walls, andmeans for adjusting each of said overflows.

17. ln a refrigerator, the combination of an inclosing casing, aremovable cooling casing therein, said cooling casing comprising hollowside walls, independent of each other, a tank supported by the walls andhaving communication with the space in the walls, said tank forming thetop oit the cooling casing and having asource of supply ot coolingfluid, down-going air circulation tubes within the walls of the coolingcasing, an 11p-going air circulation passage discharging directlythrough the tank, and an overtlo pipe for each of the walls of thecasing, each ot said overflows heilig irovided with an adjustablesection tor varying the height oit the cooling' Huid in the casing.

i8. ln a refrigerator, the combination of an inclosing casing, aremovable cooling casing therein, said cooling casing comprising hollowside walls, a tank supported by the walls and having communication withthe space in the walls, said tank forming the top or' the cooling casingand having a source of supply of cooling fluid, down-going aircirculation tubes within the walls ot the cooling casing, an 11p-goingair circulation passage separate from the walls ol" the casingdischarging directly through the tank and above the bottom thereof, theinlet of the passage being disposed in close proximity to the bottom ofthe tank, and a combined overflow and drain pipe 'tor the casing.

19. ln a rc'trige alor, the combination ot an iuclosing casing, aremovable cooling casing therein. said coolingT casing comprishollowside walls, a tank supported by the walls and having communication withthe space in the walls, said tank forming the top of the cooling' casingand having a source ot supply ot cooling fluid, down-going aircirculation tubes within the walls of the cooling casing. an upegoingair circulation passage separate trom the walls ot the casingdischarging directlyv through the tank, above the bottoni thereof andwith the inlet in close proximity to the bottom of the tank. anovertloiT pipe for the cooling casing. sai-d pipe being provided with adrain outlet adjacent the bottom of the casing it'or discharging thewater from the casing, and means for controlling the said drain outletat will.

Q0. In a refrigerator, the combination of an inclosing casing, aremovable cooling casing therein2 said cooling casing comprising hollowside walls, a tank supported by the walls and having communication withthe space in the walls, said tank forming the top of the cooling casingand having a source of supply of cooling fluid, an overflow pipe for thecooling casing, said pipe being provided with a drain outlet adjacentthe bottom of the casing for discharging the water from the casing, arotary valve for controlling the drain outlet, and a stem for operatingJthe valve, and means adjacent the top of the cooling casing foroperating the stem.

Q1. In a refrigerator, the combination of an inclosing casing, aremovable cooling casing therein` said cooling casing being pro* videdwith hollow walls and having a source of supply of cooling fluid, anoverflow pipe for the cooling casing, said pipe having a drain openingthrough its wall, a hollow valve within the pipe for cont-rolling thedrain opening whereby the overflow will pass through tho valve when thedrain opening is closed, and means for operating the valve.

22. In a refrigerator, the combination of an inclosiug casing, aremovable cooling casing therein, said cooling casing being providedwith hollow walls and having a source of supply of cooling Huid, anoverflow pipe for the cooling casing.` said pipe having a drain openingthrough its wall, a hollow valve within the pipe for controlling t-hedrain opening whereby the overflow will pass through the valve when thedrain opening is closed, means for operating the valve, and anadjustable section for the pipe whereby the height of the cooling fluidin the, casing may be varied.

Q3. In a. refrigerator, the combination of an inclosing easing, aremovable cooling easing therein, pii'o'vided with hollow walls andhaving a source of supply of cooling fiuid. a removable food receptaclein the mailing casing, down-going air circulation tubes within the wallsof the cooling casing and a removable 11p-going air circulation tubeseparate from the walls and having eonnnunication with the interior ofthe food receptacle directly through the top thereof, said tubeprojecting above the top of the cooling easing.

24. In a refrigerator, the combination of an inclosing casing, aremovable cooling easing therein provided with hollow walls and having asource of supply of cooling Huid, a removable food receptacle in thecooling casing, down-going air circulation tubes in the walls of thecooling casing and an rip-going air circulation tube removably securedto the food receptacle, said tube having communication with the interiorof t-he food receptacle and projecting through the top of the coolingcasing.

25; In a refrigerator, the combination of l an inclosing casing, aremovable cmling easing therein, said cooling casing being provided withhollow walls, a tank supported by the walls and having communicationwith the space in the walls, said tank having a source of supply ofcooling Huid, a removable food receptacle within the cooling casing,down-going air circulation tubes within the walls of the cooling casing,and an up-going air circulation tube removably secured to and havingcommunication with the food receptacle, said up-going air tube extendingdirectly through and projecting beyond the bottom of the tank.

2G. In a refrigerator, the combination of an inclosing casing, aremovable cooling casing therein, said cooling casing being providedwith hollow Walls, a tank supported by the walls and having communication with the space in the walls, said tank having a source of supply ofcooling fluid, a removable food receptacle within the cooling casing,down-going air circulation tubes within the walls of the cooling casing,an lip-going air circulation tube removably se' cured to and havingcommunication with the food receptacle, said lip-going air tubeextending directly through and projecting beyond the bottom of the tank,and a tube supported by the bottom of the tank and communicating wit-hthe opening therein and surrounding the air tube and being spaced fromsaid air tube.

27. In a refrigerator, the combination of an inclosing casing, aremovable cooling iasing therein, said cooling casing being providedwith hollow walls, a tank supported by the walls and having communica-:ion with the space in the walls, said tank caving a source of supply ofcooling Huid, a removable food receptacle within the eooling casing,downfgoing air circulation tubes within the walls of the cooling casing`said food receptacle having an opening in one wall, an up-going aircirculation tube. said tube extending through the tank with one endprojecting into t-he opening in the wall of the food receptacle, andmeans on the tube engaging opposite faces of the wall of the foodreceptacle for removably securing the tube in position.

28. In a refrigerator. the combination of an jnclosing easing.` aremovable cooling casing therein, said cooling casing being providedwith hollow walls. a tank supported by the walls and havingcommunication with the space in the walls, said tank having a source ofsupply of cooling fluid, a removable food receptacle within the coolingcasing, down-going air circulation tubes within the walls of thecoolingr casing, said food receptacle having an opening in one wall, andan 11p-going air circulation tube, said tube extending through the tank,the extremity of the tube projecting into the opening in the wall of thefood receptacle and portions of the tube being flanged against oppositefaces of the wall of the food receptacle for removably securing the tubein position.

29. In a refrigerator, the combination of an inclosing casing, aremovable cooling casing therein, said cooling` casing being providedwith hollow walls, a tank supported by the walls and havingcommunication with the space in the walls, said tank having a source ofsupply of cooling fluid, a removable food receptacle within the coolingcasing, down-going air circulation tubes within the walls of the coolingcasing, said food receptacle having an opening in one wall, an up-goingair circulation tube, said tube extending through the tank, theextremity of the tube projecting into the opening in the wall of thefood receptacle and portions of the tube being flanged against oppositefaces of the wall of the food receptacle for removably securing the tubein position, and means for forming an inclosed air space around theportion of the air tube within the tank.

30. In a refrigerator, the combination of an inclosing casing, aremovable cooling casing therein, said cooling casing being providedwith hollow walls, a tank supported by the walls and havingcommunication with the space in the walls, said tank having a source ofsupply of cooling fluid, a removable food receptacle within the coolingcasing, down -going air circulation tubes within the walls of thecooling casing, said food receptacle having an opening in one wall, andsaid tank being provided with an opening through its bottom, an up-goingair circulation tube extending through the opening in the tank bottomwith one extremity extending into the opening in the wall of the foodreceptacle, portions of the tube being anged against opposite faces ofthe top wall of the receptacle for removably securing and supporting thetube, said tube being of a smaller size than the size of the opening inthe bottom of the tank, and a tubular member surrounding the air tubeand supported by the bottom of the tank, said member communicating withand being of an internal size substantially equal to the opening in thetank bottom.

31. In a refrigerator, the combination of an inclosing casing, aremovable cooling casing therein, said cooling casing being providedwith hollow walls and having a source of supply of cooling Huid, the topof the cooling casing terminating short of the top of the outer casingto form a Huid supply chamber, down-going air circulation tubes withinthe walls of the cooling casing and having communication with the fluidsupply chamber, a partition in the said chamber and spaced vfrom onewall thereof to form an air passage having communication with thechamber, and an up-going air circulation tube separate from the casingwalls leading from the interior of the cooling casing and directlythrough the top of said casing, said tube discharging into the rst saidpassage.

32. In a refrigerator, the combination of an inclosing casing, aremovable -cooling casing therein, said cooling casing being providedwith hollow walls and having a source of supply of cooling fluid, thetop of the cooling casing terminating short of the top of the outercasing to form a fluid supply chamber, doWn-going air circulation tubeswithin the walls of the cooling casing and having communi-cation withthe fluid supply chamber, a partition removably supported in saidchamber and spaced from the wall thereof to form a passage communicatingwith the chamber, an up-going air circulation tube separate from thecasing walls communicating with the interior of the cooling casing, saidtube extending directly through the top of the cooling casing and intoand terminating in the said passage to discharge thereinto.

33. In a refrigerator, the combination of an outer casing, a removablecooling casing therein, said cooling casing comprising hollow walls, a.tank supported by the walls and having communication with the space inthe walls, said tank having a source of supply of cooling fluid, saidcooling casing terminating' short of the top of the outer casing to forma fluid supply chamber, a partition within the chamber` and spaced fromone wall to form an air passage communicating with the chamber,down-going air circulation tubes within the walls of the cooling casingon one side of the partition and having communication with the chamber,and an up-going air circulation tube separate from the casing wallscommunicating with the interior of the cooling casing and extendingdirectly through the bottom of the tank on the other side of thepartition and discharging into the said passage.

34. In a refrigerator, the combination of an outer casing, a removablecooling casing therein, said cooling casing comp-rising hollow walls, atank supported by the walls and having communication with the space inthe walls, said tank having a source of supply of cooling fluid, saidcooling casing terminating short of the top of the outer casing to forma fluid supply chamber, a partition within the chamber and spaced fromone wall to form an air passage communicating with the chamber,down-going air circulation tubes Within the walls of the cooling casingon one side of the partition and having communication with the chamber,and a removable up-going air circulation tube separate from the wallscommunicating with Cri the .interior of the cooling casing and tendingdirectly through the bottom of the tank on the other side of thepartition and discharging into the said passage.

35. In a refrigerator, the combination of an outer casing, a removablecooling casing therein, said cooling casing comprising hollow walls. atank supported by the walls and having communication with the space inthe walls, said tank having a source of supply ot' cooling fluid, saidcooling casing termis nating short of the top of the outer casing toform a fluid supply chamber, a partition within the chamber and spacedfrom one wall to form an air passage communicating with the chamber,down-going air circulaF tion tubes within the walls of the coolingcasing on one side of the partition and having` commimication with thechamberman upgoing air circulation tube communicating with the interiorof the cooling casing and extending directly through the bottom of thetank on the other side of the partition and discharging into the saidpassage, and means surrounding the tip-going air tube and spacedtherefrom to form an i'nclosed .air space around the portion of the tubepassing through the tank.

3G. In a. refrigerator, the combination of an outer casing, a removablecooling casing therein, said cooling casing' comprising hollow walls, atank supported by the walls and having' coninuinication with the spacein the walls, said tank having a source of supply of cooling fluid, saidcooling casing termi nating short of the top of the outer casing' toform a fiuid supply chamber, a partition within the chamber and spacedfrom one wall to form an air passage communicating with the chamber,down-going air circulation tubes within the walls of the cooling casingon one side of the partition and having communication with the chamber,an upgoing air circulation tube communicating with the interior of thecooling casing and extending directly through the bottom of the tank onthe other side of the partition and discharging' into the said passage,and a tubular member within the tank and supported by the bottomthereof, said member surroruiding' and being spaced from the upgoing aircirculation tube to form an in closed air space there-around.

37. In a refrigerator, the combination of a cooling casing provided withhollow walls and having a source of supply of cooling fluid, a supportfor the casing, a removable food receptacle, means on the support forsustaining the food receptacle and for holding the bottom thereof belowthe bottom of the hollow casing, said receptacle having an opening inits wall below the bottom of the hollow casing, down-going aircirculation tubes within the walls of the cooling' casing anddischarging below the casing, a partition supported by the said supportfor directing the air from said tubes into the food receptacle throughthe opening in the wall thereof, an overflow for the casing, and meansfor conducting the water from the overflow through the said partition.

38. In a refrigerator, the combination of a cooling casing provided withhollow walls, and having a source of supply of cooling fluid, a supportfor the casing, a removable food receptacle, means on the support forsustaining the food receptacle and for holding the bottom thereof belowthe bottom of' the hollow casing, said receptacle having an opening inits wall below the bottom of the hollow casing, down-going aircirculation tubes within the walls of the cooling casing and dischargingbelow the casing, a partition supported by the said support fordirecting the air from said tubes into the food receptacle through theopening in the wall thereof, said partition being spaced from the baseof the cooling casing, and provided with an opening therethrough, anoverflow pipe within the walls of the casing and terminating above thepartition on the support and in line with the opening in the partition,and a tubular member supported by the partition and surrounding theopening therethrough, said tubular member register ing with the overflowpipe.

39. In a refrigerator, the combination of a cooling casing having hollowwalls and rovided with a source of supply of coo ing fluid, a removablefood receptacle in the casing and having an opening in the wall thereof,means for supporting the receptacle with its bottom below the bottom ofthe casing, down-going air circulation tubes Within the walls of thecooling casing, a partition aranged below and spaced from the ends ofthe tubes for defiecting the air into the food receptacle through theopening in the wall, an overflow pipe for the casing discharging throughthe bottom thereof, said partition havingan opening therethrough and atubular member surrounding the opening and forming a continuation of theoverflow pipe.

40. In a refrigerator, the combination of a cooling casing' providedwith hollow walls and having a source of supply of cooling fluid, a.removable non-metallic food receptacle in the casing, said receptaclehaving an opening in one wall and an 11p-going air circulation tuberemovably secured to the wall of the receptacle and having communicationwith the interior thereof through said opening.

41. In a refrigerator, the combination of a cooling casing provided withhollow walls and having a source of supply of cooling fluid, a removablenon-metallic food receptacle in the casing, said receptacle having anopening in. one wall and an up-g0ing air ISO circulation tube, one endof the tube extending into the opening, and portions of the tube beinganged against the faces of the Wall for removably securing the tube inposition.

42. A refrigerator including in combination a cooling casing providedwith hollow walls and having asource of supply of cooling fluid, aremovable food receptacle in the casing, down-going air passages withinthe Walls of the casing and an up-going air circulation tube, the inletof which has communication with the food receptacle only, said tubeprojecting thro-ugh the top of the casing and discharging therebeyond.

48. A refrigerator including in combination a cooling casing providedwith hollow walls and having a source of supply of cooling fluid, aremovable food receptacle in the casing, down-going air passages Withinthe walls of the casing and an up-going air circulation tube supportedby the receptacle, the inlet of said tube having communication with thefood receptacle only, said tube projecting through the top of thecooling casing and discharging therebeyond.

44. A refrigerator including in combination a cooling casing providedwith hollow walls, and a tank supported by the walls and havingcommunication with the space in the walls, said tank forming the top ofthe casing and having a source of supply of cooling fluid, a removablefood receptacle in the casing, downgoing air circulation passages withinthe walls of the casing, an up-going air circulation tube, the inlet ofwhich has communication with the food receptacle only, said tubeprojecting through the tank and discharging therebeyond, and meansforming a dead air space around the tube where it passes through thetank.

' 45. A refrigerator including in combination a cooling casing, saidcooling casing having hollow walls, a tank supported by the walls andhaving communication with the space in the walls, said tank having asource of supply of cooling fluid, down-going air circulation tubeswithin the walls of the casing, an up-going air circulation tubeextending through the tank, and means inclosing the portion of the tubewhich extends through the tank, and spaced therefrom to form an inclosedair space around the said portion of the air tube.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, on this th day of J une A. D.1909.

FOREST V. DETWILER.

Witnesses:

J. H. JooHUM, Jr., M. W. CANTWELL.

Copies of this patent may be obtained for iive cents each, by addressingthe Commissioner of Patents, Washington, D. C.

